A sudden idea struck Tom.

“Say, Jack, don’t you recall reading about Mr. Peregrine and his aëroplane Red Hawk?”

“Yes, I do, very well indeed. He captured the Jordan Meritt speed and long-distance cup with it.”

“That’s right, and I’m willing to bet the hole out of a doughnut that that is the Red Hawk approaching right now. Pokeville is sixty miles off in that direction, and what more natural than that Mr. Peregrine should take an up-to-date way of paying his call?”

“I do believe you’re right, Tom,” said Jack. “Let’s go in and spruce up a bit, and then we’ll come out and meet him.”

In the rear of the work shed, which housed the Flying Road Racer, was a washroom, and to this the boys hastened to remove some of the grime of their morning’s work. While they are thus engaged, and the aëroplane is winging its way rapidly toward High Towers, it is a good time to tell something about the two lads and their adventures.

As readers of the first volume of this series—“The Boy Inventors’ Wireless Triumph”—are aware, Jack Chadwick was the wide-awake, good-looking son of a man well known for his achievements in science. The name of Chester Chadwick was one of the best known in the world along the lines of his chosen field of endeavor. Tom Jesson, almost as bright a lad as his chum and cousin, was, like Jack, motherless. His father, Jasper Jesson—Mr. Chadwick’s brother-in-law—lived at High Towers, the remainder of which establishment was composed of Mrs. Jarley, a motherly old housekeeper, two under servants, and Jupe, a colored man-of-all-work about the place.

High Towers, Professor Chadwick’s estate, was, as we already know from the address on Mr. Peregrine’s telegram, located near the village of Nestorville, not far from Boston. It was a fine old place, and consisted of a big, rambling house set in the midst of oaks and elms with broad lawns and fields stretching on every side. But the most interesting features of the place were a big lake and a group of sheds, workshops and laboratories in which Professor Chadwick and his son and nephew worked over their inventions.

For Jack and Tom were more like chums to Professor Chadwick than son and nephew. Together the three had devised the Flying Road Racer, the Chadwick gas gun, and many other remarkable devices. From his patents Professor Chadwick had amassed a considerable fortune, thus disproving the popular idea that inventors are, of necessity, shiftless or needy.

The present story opens on a day not long after the three, together with Mr. Jesson, had returned from an adventurous trip in the neighborhood of the semi-savage country of Yucatan. As readers of “The Boy Inventors’ Wireless Triumph” know, Jack and Tom, accompanied by Jupe, had been despatched mysteriously to Lone Island, a desolate spot of land off the mouth of the Rio Grande. Here they had awaited a wireless message from Professor Chadwick, who was cruising on a chartered steam yacht, the Sea King. At last the eagerly expected message came, and the boys set out on a gasolene motor boat to find the Sea King, which, the message had informed them, was disabled.